Installation, device, and method for shaping the mouth of a hollow-body-shaped precursor from glass

A plurality of pharmaceutical glass vials, comprising:

• 10 to 1000 glass vials each having a mouth with an internal diameter and an external diameter,
• wherein the internal diameter of the mouth of each of the 10 to 1000 glass vials differing from a nominal internal diameter value by less than 0.20 mm, and/or
• wherein the external diameter of the mouth of each of the 10 to 1000 glass vials differing from a nominal external diameter value by less than 0.20 mm.

A device for shaping a mouth of a hollow precursor made of glass, the device comprising:

• a mandrel configured for introduction into the mouth along a first direction;
• and
• a mounting having the mandrel disposed thereon, wherein the mounting has a base element, the mandrel being movable along a second direction in relation to the base element.